Dogs act like toddlers when you need help - but cats just watch. Scientists compared 3 groups: pet dogs, cats, and human toddlers in an experiment where a human parent hides and pretends to look for an object. 75% of dogs and children helped. Cats only helped if it was in their personal interest.

· · 来源：beijing资讯

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Bridgerton Season 4 soundtrack is out now via Capitol Records.，推荐阅读快连下载安装获取更多信息

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或许是心中有个标准束缚，妈妈对围炉的焦虑弥漫在家中，每隔三年便发作一次，是我家独有的“年兽”，也是我从小不喜欢过年的众多理由之一。。51吃瓜对此有专业解读

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